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CVE-2020-35902 — Use-after-free in actix-codec — CVE Details

CRITICAL

Use-after-free in actix-codec

Published August 25, 2021Updated May 23, 2025Source: osv

Summary

An issue was discovered in the actix-codec crate before 0.3.0-beta.1 for Rust. There is a use-after-free in Framed.

Advisory Timeline

  • First published August 25, 2021 (1874 days ago).
  • Last revised May 23, 2025 — 1367 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update actix-codec to 0.3.0 or later
cargo update -p actix-codec --precise 0.3.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
actix-codec
crates.io
All versions0.3.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2020-35902?
Use-after-free in actix-codec This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2020-35902?
CVE-2020-35902 affects actix-codec. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2020-35902 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-rqgx-hpg4-456r
RUSTSEC-2020-0049

Related CVEs

More crates.io advisories

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